Improvement in stone-polishing machines



Vtrating its form of construction.

UNITED STATES PATENT EEICE.

ISAAC C. SHULER, OF AMSTERDAM, NEW YORK.

IMPROVEMENT IN STONE-POLISHING MACHINES.

Specification forming part of Letters Patent No. 156,653, dated November l0, 1874; application filed July 8, 1874.

To all whom it may concern: y

Be it known that I, IsAAc C. SHULER, of Amsterdam, Montgomery county, New York, have invented a Machine for Rubbing and Polishing Surfaces, of which the following is a specification:

The object of my invention is a machine to be used in rubbing and polishing surfaces or solids, for various kinds of work and on various surfaces, and in different stages of V completion, which machine is represented in the accompanying drawing, and is herewith described.

Figure I represents a perspective view of the machine embodying the improvements of this invention. Fig. 2 is a plan view of the same. Fig. 3 is a longitudinal sectional elevation. Fig. 4 is across-sectional view. Fig. 5 is a side view of the elastic rubber, illus- Fig. 6 is a plan view of a section of the carrier and dredge-boX employed in this invention.

In the drawings, A A represent any suitable frame-work of wood or iron. B is the supporting-table for holding or retaining the article to be rubbed or polished, which table is supported by wheels G U running on the tracks or ways D D, and capableof being moved laterally in either direction. c a are perforations made in the said table, to permit the wa'ter, or other liquid used, owing on the work to pass off. b b are handles for operating said table. Placed above the table B is the carrrier E, made with a water y chamber, Ef, Figs. 3 and 4, and vertical ways c c, as shown inFig. 2, to receive the shafts d d ofthe rubbers F. The rubbers F are4 made to consist of the shaft d and rubbinghead e, which head is connected to the shaft d by a universal joint, el, as shown in Fig. 5, so as to render the said rubbing-head capable of oscillating in any direction, and accommodating itself to various undulations which the surface of ma-terialor object to be operated upon'may require. Each rubber is made elastic by aspring, e2, so as to 4be capable of yielding and gently pressing on surface operated with. G G are lifting-bars placed longitudinal with the carrier E, one

at each end of the line of rubber shafts d d,

as shown in Fig. l, 2, 3, and 4. The'ends of thc said lifting-bars are each pivoted to an end shaft, d, and are provided with the camcams are thrown back, as indicated by dotted lines in Fig. 1, and are represented to fall when the said handles are thrown down, as shown by full lines in same gure. The several shafts d d are suspended by pins n, Fig. l, fixed in the said shafts, and resting on the the upper edges of the lifting-bars G G. The water-chamber is provided with a funnel, f, Fig. 3, for the introduction of water to the said chamber, the bottom being provided with perforations on m at intervals, through which. the water may escape to feed the work resting on the table B B below. J J are d red ges for holding and sifting sand, emery, pumicestone, or other equivalent material, and are pivoted to the under side of the carrier, so as be capable of being turned out from beneath for the introduction of polishing material, as shown by full lines in Fig. 6, andV of being passed beneath, as shown by dotted lines in same ligure. wheels K K, Fig. 3, running on a proper track, and is operated by the crank-shaft L from the pulley M, through the medium of the pitman N, Figs l, 2, and 3. P is an elastic rubber, made to operate vertically with a reciprocating motion from the crank-shaft L by the pitman P', and is intended to operate with plain surfaces. Attached to and carried by the end of the carrier E is the edge-polisher R, operated simultaneously with the rubbers F F. S is the flier or balance-wheel for giving uniformity of motion.

What I claim as my invention, and for which I desire Letters Patent, is

l. The combination of the carriage E, constructed with double bed pieces to receive and operate the series of rubbers F F, and the Water-chamber E', provided with dredging-boxes J J, to sift the polishing material between rubber-heads e c, the several parts being relatively arranged and operated as and for the purposes set forth.

2. The combination of the series of rubbers F, with bars G, and cam-levers H H, whereby the said rubbers may be elevated and depressed, substantially as described.

I. C. SHULER.

Witnesses:

A. CLARK, H. B. WALDRON.

levers H H, Figs. l, 2, and 4, by which the t said bars are elevated when the handles of the The carrier E is supported by l 

